It appears that you have the same brackets underneath as my 2WD, I would think the routing is the same.as the 2WD. The driver's side goes through the bracket underneath and through the frame to the outside of the frame rail through the mounting tab and routed to the rear wheel. I installed a rubber gromet on the outside mounting tab to secure the brake cable better.

 

Alright then, I will order the cables and attempt to route mine according to yours, thank you so much for your help, I will post an update after I get it done. Thanks again and have a good night,

 

Thanks mr vls, your help is much appreciated, just got done according to what you showed me , got it adjusted and working properly, thanks bless you and happy thanksgiving!

 

Glad I could help. My rear brakes have been converted to disc using parts from a 2000 Blazer. The connection at the brakes is different than the drum brakes. I had ordered replacement brake/cable housings from Bruin brake cables. I replaced the cable inside the housing with cables pulled from a 2000 blazer and cut them to the correct length and crimped on new cable stops.

Cable stop crimped on to rear brake cables.

Rear brake cable attached to rear disc.

Rear brake cable attached to connector